Function PyArray_INCREF

numpy/core/src/multiarray/refcount.c:242–294

Used for arrays of python objects to increment the reference count of */ every python object in the array. */ NUMPY_API For object arrays, increment all internal references. */

  For object arrays, increment all internal references.
*/
NPY_NO_EXPORT int
PyArray_INCREF(PyArrayObject *mp)
{
    npy_intp i, n;
    PyObject **data;
    PyObject *temp;
    PyArrayIterObject *it;

    if (!PyDataType_REFCHK(PyArray_DESCR(mp))) {
        return 0;
    }
    if (PyArray_DESCR(mp)->type_num != NPY_OBJECT) {
        it = (PyArrayIterObject *)PyArray_IterNew((PyObject *)mp);
        if (it == NULL) {
            return -1;
        }
        while(it->index < it->size) {
            PyArray_Item_INCREF(it->dataptr, PyArray_DESCR(mp));
            PyArray_ITER_NEXT(it);
        }
        Py_DECREF(it);
        return 0;
    }

    if (PyArray_ISONESEGMENT(mp)) {
        data = (PyObject **)PyArray_DATA(mp);
        n = PyArray_SIZE(mp);
        if (PyArray_ISALIGNED(mp)) {
            for (i = 0; i < n; i++, data++) {
                Py_XINCREF(*data);
            }
        }
        else {
            for( i = 0; i < n; i++, data++) {
                memcpy(&temp, data, sizeof(temp));
                Py_XINCREF(temp);
            }
        }
    }
    else { /* handles misaligned data too */
        it = (PyArrayIterObject *)PyArray_IterNew((PyObject *)mp);
        if (it == NULL) {
            return -1;
        }
        while(it->index < it->size) {
            memcpy(&temp, it->dataptr, sizeof(temp));
            Py_XINCREF(temp);
            PyArray_ITER_NEXT(it);
        }
        Py_DECREF(it);
    }
    return 0;
}

/*NUMPY_API
  Decrement all internal references for object arrays.